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Finding the Fourth Proportional to 136,679.70, 204,930.45 and 122,682.90

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Solution

The fourth proportional to 136,679.70, 204,930.45 and 122,682.90 is: 183,944.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,679.70 : 204,930.45 = 122,682.90 : x
  2. Step 2: Convert to fraction form
    136,679.70/204,930.45 = 122,682.90/x
  3. Step 3: Cross multiply
    136,679.70x = 204,930.45 × 122,682.90
  4. Step 4: Simplify right side
    136,679.70x = 25,141,461,904.31
  5. Step 5: Solve for x
    x = 25,141,461,904.31/136,679.70
  6. Step 6: Final answer
    x = 183,944.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.